Three sizes of flexible anal plugs. This trainer kit provides an enjoyable way to expand your sexial limits. The plugs have strong suction-cups and can be used with all lubricants. Mini: 3.2 x 1.7 x 1.7 inch - 8.1 x 4.3 x 4.3 cm Sm: 4 x 1.7 x 1.7 inch - 10.1 x 4.3 x 4.3 cm Med: 5 x 2.1 x 2.1 inch - 12.7 x 10.9 x 10.9 cm